CD54HC373, CD74HC373OCTAL TRANSPARENT D-TYPE LATCHES

WITH 3-STATE OUTPUTS

SCLS452A – FEBRUARY 2001 – REVISED APRIL 2003

1POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

2-V to 6-V VCC Operation

Wide Operating Temperature Range of–55°C to 125°C

Balanced Propagation Delays andTransition Times

Standard Outputs Drive up to 15 LS-TTLLoads

Significant Power Reduction Compared toLS-TTL Logic ICs

description/ordering information

The ’HC373 devices are octal transparent D-typelatches designed for 2-V to 6-V VCC operation.

When the latch-enable (LE) input is high, the Q outputs follow the data (D) inputs. When LE is low, the Q outputsare latched at the logic levels of the D inputs.

A buffered output-enable (OE) input can be used to place the eight outputs in either a normal logic state (highor low) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus linessignificantly. The high-impedance state and increased drive provide the capability to drive bus lines withoutinterface or pullup components.

OE does not affect the internal operations of the latches. Old data can be retained or new data can be enteredwhile the outputs are in the high-impedance state.

To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullupresistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

ORDERING INFORMATION

TA PACKAGE† ORDERABLEPART NUMBER

TOP-SIDEMARKING

PDIP – E Tube CD74HC373E CD74HC373E

55°C to 125°C SOIC MTube CD74HC373M

HC373M–55°C to 125°C SOIC – MTape and reel CD74HC373M96

HC373M

CDIP – F Tube CD54HC373F3A CD54HC373F3A

† Package drawings, standard packing quantities, thermal data, symbolization, and PCB designguidelines are available at www.ti.com/sc/package.

Copyright 2003, Texas Instruments IncorporatedPRODUCTION DATA information is current as of publication date.Products conform to specifications per the terms of Texas Instrumentsstandard warranty. Production processing does not necessarily includetesting of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications ofTexas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

CD54HC373 . . . F PACKAGECD74HC373 . . . E OR M PACKAGE

(TOP VIEW)

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

OE1Q1D2D2Q3Q3D4D4Q

GND

VCC8Q8D7D7Q6Q6D5D5QLE

On products compliant to MIL-PRF-38535, all parameters are testedunless otherwise noted. On all other products, productionprocessing does not necessarily include testing of all parameters.

CD54HC373, CD74HC373OCTAL TRANSPARENT D-TYPE LATCHESWITH 3-STATE OUTPUTS

SCLS452A – FEBRUARY 2001 – REVISED APRIL 2003

2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

FUNCTION TABLE(each latch)

INPUTS OUTPUTOE LE D Q

L H H H

L H L L

L L X Q0

H X X Z

logic diagram (positive logic)

OE

To Seven Other Channels

1

11

32

LE

1D

C1

1D1Q

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†

Supply voltage range, VCC –0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input clamp current, IIK (VI < 0 or VI > VCC) (see Note 1) ±20 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Output clamp current, IOK (VO < 0 or VO > VCC) (see Note 1) ±20 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous output drain current per output, IO (VO = 0 to VCC) ±35 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous output source or sink current per output, IO (VO = 0 to VCC) ±25 mA. . . . . . . . . . . . . . . . . . . . . . . Continuous current through VCC or GND ±50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Package thermal impedance, θJA (see Note 2): E package 69°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

M package 58°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage temperature range, Tstg –65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, andfunctional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is notimplied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.2. The package thermal impedance is calculated in accordance with JESD 51-7.

CD54HC373, CD74HC373OCTAL TRANSPARENT D-TYPE LATCHES

WITH 3-STATE OUTPUTS

SCLS452A – FEBRUARY 2001 – REVISED APRIL 2003

3POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

recommended operating conditions (see Note 3)

MIN MAX UNIT

VCC Supply voltage 2 6 V

VCC = 2 V 1.5

VIH High-level input voltage VCC = 4.5 V 3.15 V

VCC = 6 V 4.2

VCC = 2 V 0.5

VIL Low-level input voltage VCC = 4.5 V 1.35 V

VCC = 6 V 1.8

VI Input voltage 0 VCC V

VO Output voltage 0 VCC V

VCC = 2 V 1000

tt Input transition (rise and fall) time VCC = 4.5 V 500 ns

VCC = 6 V 400

TA Operating free-air temperature –55 125 °C

NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,Implications of Slow or Floating CMOS Inputs, literature number SCBA004.

electrical characteristics over recommended operating free-air temperature range (unlessotherwise noted)

PARAMETER TEST CONDITIONS VCCTA = 25°C

TA = –55°CTO 125°C

TA = –40°CTO 85°C UNITCC

MIN MAX MIN MAX MIN MAX

2 V 1.9 1.9 1.9

IOH = –20 µA 4.5 V 4.4 4.4 4.4

VOH VI = VIH or VIL 6 V 5.9 5.9 5.9 V

IOH = –6 mA 4.5 V 3.98 3.7 3.84

IOH = –7.8 mA 6 V 5.48 5.2 5.34

2 V 0.1 0.1 0.1

IOL = 20 µA 4.5 V 0.1 0.1 0.1

VOL VI = VIH or VIL 6 V 0.1 0.1 0.1 V

IOL = 6 mA 4.5 V 0.26 0.4 0.33

IOL = 7.8 mA 6 V 0.26 0.4 0.33

II VI = VCC or 0 6 V ±0.1 ±1 ±1 µA

IOZ VO = VCC or 0 6 V ±0.5 ±10 ±5 µA

ICC VI = VCC or 0, IO = 0 6 V 8 160 80 µA

Ci 10 10 10 pF

Co 20 20 20 pF

CD54HC373, CD74HC373OCTAL TRANSPARENT D-TYPE LATCHESWITH 3-STATE OUTPUTS

SCLS452A – FEBRUARY 2001 – REVISED APRIL 2003

4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

timing requirements over recommended operating free-air temperature range (unless otherwisenoted) (see Figure 1)

VCCTA = 25°C

TA = –55°CTO 125°C

TA = –40°CTO 85°C UNITCC

MIN MAX MIN MAX MIN MAX

2 V 80 120 100

tw Pulse duration, LE high 4.5 V 16 24 20 ns

6 V 14 20 17

↓

2 V 50 75 65

tsu Setup time, data before LE↓ 4.5 V 10 15 13 ns

6 V 9 13 11

↓

2 V 5 5 5

th Hold time, data after LE↓ 4.5 V 5 5 5 ns

6 V 5 5 5

switching characteristics over recommended operating free-air temperature range (unlessotherwise noted) (see Figure 1)

PARAMETERFROM

(INPUT)TO

(OUTPUT)LOAD

CAPACITANCE VCCTA = 25°C

TA = –55°CTO 125°C

TA = –40°CTO 85°C UNIT(INPUT) (OUTPUT) CAPACITANCE CC

MIN MAX MIN MAX MIN MAX

2 V 150 225 190

D Q CL = 50 pF 4.5 V 30 45 38

t d6 V 26 38 33

nstpd2 V 175 265 220

ns

LE Q CL = 50 pF 4.5 V 35 53 44

6 V 30 45 37

2 V 150 225 190

ten OE Q CL = 50 pF 4.5 V 30 45 38 ns

6 V 26 38 33

2 V 150 225 190

tdis OE Q CL = 50 pF 4.5 V 30 45 38 ns

6 V 26 38 33

2 V 60 90 75

tt Q CL = 50 pF 4.5 V 12 18 15 ns

6 V 10 15 13

operating characteristics, VCC = 5 V, TA = 25°CPARAMETER TYP UNIT

Cpd Power dissipation capacitance 51 pF

CD54HC373, CD74HC373OCTAL TRANSPARENT D-TYPE LATCHES

WITH 3-STATE OUTPUTS

SCLS452A – FEBRUARY 2001 – REVISED APRIL 2003

5POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

PARAMETER MEASUREMENT INFORMATION

TestPointFrom Output

Under Test

CL(see Note A)

VCC

S1

S2

LOAD CIRCUIT

PARAMETER

tPZH

tpd or tt

tdis

tentPZL

tPHZ

tPLZ

Open Closed

S1

Closed Open

S2

Open Closed

Closed Open

Open Open

NOTES: A. CL includes probe and test-fixture capacitance.B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.

Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.C. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following

characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr = 6 ns, tf = 6 ns.D. For clock inputs, fmax is measured with the input duty cycle at 50%.E. The outputs are measured one at a time with one input transition per measurement.F. tPLZ and tPHZ are the same as tdis.G. tPZL and tPZH are the same as ten.H. tPLH and tPHL are the same as tpd.I. All parameters and waveforms are not applicable to all devices.

RL = 1 kΩ

VOLTAGE WAVEFORMSSETUP AND HOLD AND INPUT RISE AND FALL TIMES

thtsu

50% VCC

50% VCC50%10%10%

90% 90%

VCC

VCC

0 V

0 V

tr tf

ReferenceInput

DataInput

VOLTAGE WAVEFORMSPROPAGATION DELAY AND OUTPUT TRANSITION TIMES

50% VCC

50% VCC50%10%10%

90% 90%

VCC

VOH

VOL

0 V

tr tf

Input

In-PhaseOutput

50% VCC

tPLH tPHL

50% VCC 50%10% 10%

90%90%VOH

VOLtrtf

tPHL tPLH

Out-of-PhaseOutput

0 V

tw

VOLTAGE WAVEFORMSPULSE DURATION

Input 50% VCC50% VCC

VCC

OutputControl

OutputWaveform 1(see Note B)

OutputWaveform 2(see Note B)

VOL

VOH

tPZL

tPZH

tPLZ

tPHZ

≈VCC

0 V

50% VCC10%

50% VCC≈0 V

VOLTAGE WAVEFORMSOUTPUT ENABLE AND DISABLE TIMES

50% VCC 50% VCC

90%

VCC

VOLTAGE WAVEFORMSRECOVERY TIME

50% VCC

VCC

0 V

CLRInput

CLK 50% VCC

VCC

trec

0 V

Figure 1. Load Circuit and Voltage Waveforms

PACKAGE OPTION ADDENDUM

www.ti.com 7-May-2012

Addendum-Page 1

PACKAGING INFORMATION

Orderable Device Status (1) Package Type PackageDrawing

Pins Package Qty Eco Plan (2) Lead/Ball Finish

MSL Peak Temp (3) Samples

(Requires Login)

CD54HC373F ACTIVE CDIP J 20 1 TBD A42 N / A for Pkg Type

CD54HC373F3A ACTIVE CDIP J 20 1 TBD A42 N / A for Pkg Type

CD74HC373E ACTIVE PDIP N 20 20 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type

CD74HC373EE4 ACTIVE PDIP N 20 20 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type

CD74HC373M ACTIVE SOIC DW 20 25 Green (RoHS& no Sb/Br)

CU NIPDAU Level-1-260C-UNLIM

CD74HC373M96 ACTIVE SOIC DW 20 2000 Green (RoHS& no Sb/Br)

CU NIPDAU Level-1-260C-UNLIM

CD74HC373M96E4 ACTIVE SOIC DW 20 2000 Green (RoHS& no Sb/Br)

CU NIPDAU Level-1-260C-UNLIM

CD74HC373M96G4 ACTIVE SOIC DW 20 2000 Green (RoHS& no Sb/Br)

CU NIPDAU Level-1-260C-UNLIM

CD74HC373ME4 ACTIVE SOIC DW 20 25 Green (RoHS& no Sb/Br)

CU NIPDAU Level-1-260C-UNLIM

CD74HC373MG4 ACTIVE SOIC DW 20 25 Green (RoHS& no Sb/Br)

CU NIPDAU Level-1-260C-UNLIM

(1) The marketing status values are defined as follows:ACTIVE: Product device recommended for new designs.LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.PREVIEW: Device has been announced but is not in production. Samples may or may not be available.OBSOLETE: TI has discontinued the production of the device.

(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availabilityinformation and additional product content details.TBD: The Pb-Free/Green conversion plan has not been defined.Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement thatlead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used betweenthe die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weightin homogeneous material)

(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.

PACKAGE OPTION ADDENDUM

www.ti.com 7-May-2012

Addendum-Page 2

Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on informationprovided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken andcontinues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.

In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.

OTHER QUALIFIED VERSIONS OF CD54HC373, CD74HC373 :

• Catalog: CD74HC373

• Military: CD54HC373

NOTE: Qualified Version Definitions:

• Catalog - TI's standard catalog product

• Military - QML certified for Military and Defense Applications

TAPE AND REEL INFORMATION

*All dimensions are nominal

Device PackageType

PackageDrawing

Pins SPQ ReelDiameter

(mm)

ReelWidth

W1 (mm)

A0(mm)

B0(mm)

K0(mm)

P1(mm)

W(mm)

Pin1Quadrant

CD74HC373M96 SOIC DW 20 2000 330.0 24.4 10.8 13.0 2.7 12.0 24.0 Q1

PACKAGE MATERIALS INFORMATION

www.ti.com 14-Jul-2012

Pack Materials-Page 1

*All dimensions are nominal

Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)

CD74HC373M96 SOIC DW 20 2000 367.0 367.0 45.0

PACKAGE MATERIALS INFORMATION

www.ti.com 14-Jul-2012

Pack Materials-Page 2

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